Question 1

The value calculated by a method is called its _____ value.

Accepted Answer

A) implicit 
B) explicit 
C) argument 
D) return 
A) implicit 
B) explicit 
C) argument 
D) return

Question 2

Drawing instructions should be placed inside the ____ method, which is called whenever the component needs to be repainted.

Accepted Answer

A) paintComponent 
B) draw 
C) paint 
D) drawComponent 
A) paintComponent 
B) draw 
C) paint 
D) drawComponent

Question 3

What is the output of the following code:

Accepted Answer

A) 3 
B) 8 
C) 6 
D) 4 
A) 3 
B) 8 
C) 6 
D) 4

Question 4

Which of the following constructs a Circle of radius 3, assuming the construction parameter is the radius value?

Accepted Answer

A) Circle(3).new 
B) new Circle(3) 
C) new.Circle(3) 
D) Circle(3) 
A) Circle(3).new 
B) new Circle(3) 
C) new.Circle(3) 
D) Circle(3)

Question 5

Which of the following declares a variable that will store a measurement with fractional parts?

Accepted Answer

A) int measure; 
B) double measure; 
C) String measure; 
D) integer measure; 
A) int measure; 
B) double measure; 
C) String measure; 
D) integer measure;

Question 6

Assuming the following Java statement:
Circle c1 = new Circle(3);
What does the variable c1 store?

Accepted Answer

A) The constructed Circle object itself. 
B) A reference to the Circle class. 
C) A reference to the constructed Circle object. 
D) The numeric value 3. 
A) The constructed Circle object itself. 
B) A reference to the Circle class. 
C) A reference to the constructed Circle object. 
D) The numeric value 3.

Question 7

What is the name of the type that denotes a string of characters?

Accepted Answer

A) Characters 
B) char 
C) charString 
D) String 
A) Characters 
B) char 
C) charString 
D) String

Question 8

What term is used to refer to text in a program that is an explanation for human readers of the code?

Accepted Answer

A) methods 
B) comments 
C) constants 
D) [* and *] 
A) methods 
B) comments 
C) constants 
D) [* and *]

Question 9

A method is a sequence of ___ that accesses the data of an object.

Accepted Answer

A) data 
B) objects 
C) instructions 
D) streams 
A) data 
B) objects 
C) instructions 
D) streams

Question 10

What does API stand for?

Accepted Answer

A) Applet Programming Interface 
B) Application Programmer Interaction 
C) Application Programming Instance 
D) Application Programming Interface 
A) Applet Programming Interface 
B) Application Programmer Interaction 
C) Application Programming Instance 
D) Application Programming Interface

Question 11

The setVisible method of the JFrame class returns what kind of argument?

Accepted Answer

A) The setVisible method does not return a result. 
B) The setVisible method returns an integer value. 
C) The setVisible method returns a String object. 
D) The setVisible method returns a JFrame object. 
A) The setVisible method does not return a result. 
B) The setVisible method returns an integer value. 
C) The setVisible method returns a String object. 
D) The setVisible method returns a JFrame object.

Question 12

A(n) _____________ is a collection of classes with a related purpose.

Accepted Answer

A) package 
B) import 
C) method 
D) collection 
A) package 
B) import 
C) method 
D) collection

Question 13

Complete the following statement, which constructs an ellipse.
Ellipse2D.Double ellipse = new ____________________ (x, y, width, height);

Accepted Answer

A) Double.Ellipse2D 
B) Ellipse2D.Double 
C) Ellipse2D 
D) Double 
A) Double.Ellipse2D 
B) Ellipse2D.Double 
C) Ellipse2D 
D) Double

Question 14

Which of the following represents a method declaration with a void return type?

Accepted Answer

A) public void setValue(int value) { ...} 
B) public void int getValue() { ...} 
C) void public setValue(int value) { ...} 
D) void int getValue() { ...} 
A) public void setValue(int value) { ...} 
B) public void int getValue() { ...} 
C) void public setValue(int value) { ...} 
D) void int getValue() { ...}

Question 15

Which statement calls a constructor with no construction arguments?

Accepted Answer

A) Circle c = new Circle(); 
B) A call to a constructor must have construction arguments. 
C) Circle c = new Circle; 
D) Circle c = Circle() 
A) Circle c = new Circle(); 
B) A call to a constructor must have construction arguments. 
C) Circle c = new Circle; 
D) Circle c = Circle()

Question 16

Which statement about identifiers is correct?

Accepted Answer

A) Identifiers are not case sensitive. 
B) Spaces are permitted inside identifiers. 
C) Identifiers can use symbols such as ? or %. 
D) Identifiers can be made up of letters, digits, and the underscore (_) character. 
A) Identifiers are not case sensitive. 
B) Spaces are permitted inside identifiers. 
C) Identifiers can use symbols such as ? or %. 
D) Identifiers can be made up of letters, digits, and the underscore (_) character.

Question 17

Which of the following statements about methods is correct?

Accepted Answer

A) A method can have only one argument. 
B) The return value of a method can be used as an argument to another method. 
C) Every method must have a return value. 
D) A method can have multiple arguments. 
A) A method can have only one argument. 
B) The return value of a method can be used as an argument to another method. 
C) Every method must have a return value. 
D) A method can have multiple arguments.

Question 18

In the code below, write a statement that sets the graphic to green.

Accepted Answer

A) g2.setColor(GREEN); 
B) g2.SetColor(0, 255, 0); 
C) g2.setColor(Color.GREEN); 
D) g2.setColor("GREEN"); 
A) g2.setColor(GREEN); 
B) g2.SetColor(0, 255, 0); 
C) g2.setColor(Color.GREEN); 
D) g2.setColor("GREEN");

Question 19

If greeting is a String object, which method call is incorrect?

Accepted Answer

A) greeting.length() 
B) greeting.toLowerCase() 
C) greeting.toUpperCase() 
D) greeting.println() 
A) greeting.length() 
B) greeting.toLowerCase() 
C) greeting.toUpperCase() 
D) greeting.println()

Question 20

Assuming that the variable count has been declared as type int, which statement changes the value of count?

Accepted Answer

A) count = 6; 
B) count == 6; 
C) integer count = 6; 
D) count = 6.0; 
A) count = 6; 
B) count == 6; 
C) integer count = 6; 
D) count = 6.0;

Exam 2: Using Objects

The value calculated by a method is called its _____ value.

Drawing instructions should be placed inside the ____ method, which is called whenever the component needs to be repainted.

What is the output of the following code:

Which of the following constructs a Circle of radius 3, assuming the construction parameter is the radius value?

Which of the following declares a variable that will store a measurement with fractional parts?

Assuming the following Java statement: Circle c1 = new Circle(3); What does the variable c1 store?

What is the name of the type that denotes a string of characters?

What term is used to refer to text in a program that is an explanation for human readers of the code?

A method is a sequence of ___ that accesses the data of an object.

What does API stand for?

The setVisible method of the JFrame class returns what kind of argument?

A(n) _____________ is a collection of classes with a related purpose.

Complete the following statement, which constructs an ellipse. Ellipse2D.Double ellipse = new ____________________ (x, y, width, height);

Which of the following represents a method declaration with a void return type?

Which statement calls a constructor with no construction arguments?

Which statement about identifiers is correct?

Which of the following statements about methods is correct?

In the code below, write a statement that sets the graphic to green.

If greeting is a String object, which method call is incorrect?

Assuming that the variable count has been declared as type int, which statement changes the value of count?

Introduction

Implementing Classes

Fundamental Data Types

Decisions

Loops

Arrays and Array Lists

Designing Classes

Inheritance

Interfaces

Input/Output and Exception Handling

Object-Oriented Design

Recursion

Sorting and Searching

The Java Collections Framework

Basic Data Structures

Tree Structures

Generic Classes

Stream Processing

Graphical User Interfaces

Advanced Input/Output

Multithreading

Internet Networking

Relational Databases

XML

Filters